Snowplow and distributing attachment for road-scraping machines



July 13 1926.

H. E. WILSON SNOIPLOW AND DISTRIBUTING ATTACHMENT FOR ROAD SCRAP INC?MACHINES F led March 25, 1925 2 Sheets-Sheet 1 July 13, 1926. 1,592,690

H. E. WILSON SNOWPLOW AND DISTRIBUTING ATTACHMENT FOR ROAD SCRAPINGMACHINES Filed Marc 25, 1925 2 Sheets-Sheet 2 WWWMM Patented July 13,1926.

UNITED STATES HENRY E. WILSON, OF PEMBERTON, MINNESOTA.

SNOWPLOIV AND DISTRIBUTING ATTACHMENT FOR ROAD-$CRAPING MACHINES.

Application filed March 25, 1925. Serial No. 18,145.

This invention relates to snow plow attachments for road scraping orgrading machines, whereby the standard road scraper may be convertedinto a highly efficient snow plow and snow distributor.

The greatest objection-to snow plows used on rural roads is that thesnow is banked up on the sides of the roads, forming walls ofconsiderable height before the winter is over. Falling snow, driftsbetween these walls, often collecting to a considerable depth. When theroad is again plowed, much difficulty is, of course, encountered, goingthrough these drifts and again turning ofl the snow to the sides of theroad. Moreover, the walls at each side of the road increase in widtheach time the road is plowed, consequently narrowing the driving spaceof the road.

It is the main object of this invention to provide an attachment for aroad scraping machine which will permit the snow to be plowed by theusual road scraping blade and distributed over the shoulder of the roador in the ditch atone side of the road where it will not bank and formtheobjectionable walls at the sides ofthe road. The attachment is alsowell adapted for distributing sand, dirt and gravel on the shoulder ofthe road.

It is a further object of the invention to provide an auxiliary bladeadapted to overhang the shoulder of a road and to receive the snow fromadiagonally disposed road scraping blade and distribute the same overthe shoulder of the road and in the ditch adjacent thereto. The snow isthus not only removed from the road but spread out where it will morequickly be melted and evaporated.

It is a further object of the invention to provide an outwardlyextending auxiliary blade secured to one end of the road scraping bladehaving its bottom edge disposed some distance above the bottom edge ofthe road scraping blade.

A still further object of the invention is to provide means rigidlysecured to one of the back wheels of the machine, or the side of theframe, to prevent lateral skidding of the machine due to the side pressure exerted by the auxiliary blade in plowing and distributing thesnow. The co-operation of this non-skidding means is found necessary toefficiently plow and distribute the snow as desired.

It is 3'111016 specific object of the invention to provide in such adevice a pivoted means connected to its outer end, and pro- H vided withmeans for raising or lowering said blade to. a desired position.

A still further object of the invention is'to provide a snow plow anddistributing attachment for standard road scraping machines capable ofbeing'secured to function at either side of the scraper blade.

These and other objects of the invention will be apparent from thefollowing description made in connection with the accompanying drawings,wherein like notations refer to similar parts throughout the severalviews, and in which Fig. .1 is a cross section through the front portionof a standard road scraping machine having the preferred form oftheinventionmounted thereon, showing most of the parts in elevation;

Fig. 2 is a plan view of the device mounted on a road scraping machinewith some parts of the machine being broken away;

Fig. 3 is a rear elevation of the auxiliary blade attached to the bladeof the scraping machine;

Fig. 4 isan enlarged fragmentary rear elevation of the attaching meansfor said blades with some parts detached;

Fig. 5 is a vertical section taken on the line 5-5 of Fig. 4;

Fig. 6 is a side elevation of the non-skidding runner rigidly secured toone of the back wheels of the scraping machine;

Fig. 7 is a vertical section taken on the line 7.7 of Fig. 6, and

Figure 8 is a detailed view showing the means for quickly elevating theauxiliary blade to prevent interference thereof with obstacles on theroad.

In Figs. 1 and 2 astandard road scraping machine is illustrated havingthe main frame 8 mounted on the front and rear wheels 9 and 10respectively, the sub-frame 11 extending from the front of the machineto approximately the central portion thereof below frame 8 and carryingthe ring or circle 12 on which the semi-annular member 13 is slidablymounted, constituting a turn table for supporting a scraper blade 14.The blade 14: is secured to the turn-table 13 by means of the dependingarms 15, and is usually of suflicient length to traverse the distancebetween the outer sides of the back wheels, preferably having a concavefront side. The usual sharpened cutting edge 14 is secured to the bottomedge of the blade 14. Operating wheels 16 engaging suitable mechanismfor raising or lowering the two ends of the blade 14 and thereby varyingthe angle of said blade, are mounted on the rear portion of the mainframe 8. The turntable is supported from the sub-frame 11. The rear axlehousing 17 is secured to the rear ends of the main frame 8 and the fronttruck is pivoted to the main frame by the king bolt 18.

The invention in its preferred form comprises several co-operatingdevices adapted to be readily attached to the standard road scrapingmachine. An elongated auxiliary blade 19 of approximately the samelength and thickness as the scraping blade 14 is provided having thecentrally projected apertured tongues 19 at either end thereof, thelower portions of the ends of the blade proper extending at right anglesto the bot tom of the blade and affording the square shoulders 19, thepurpose of which will later be explained The end portions of the blade19, above the tongues 19*. are cut on an oblique line affording theoblique shoulders 19, extending inwardly somewhat with respect to thesquare shoulders 19*. A cutting edge 20 is secured to the bottom edge ofthe blade 19 at the front side thereof. having its ends spaced slightlyfrom the shoulders 19 of said blade. The scraping blade 14 is providedat its end portions with three vertically spaced apertures therethrough.and channeled plates 22 having the lower square shoulders 22 and theupper oblique shoulders 22", are provided, also carr ing the centralbosses 23 and having the three vertically spaced apertures therethroughin alinement with the apertures in the ends of scraping blade 14. Theapertures in the tongues 19 of the auxiliary blade 19 are of slightlygreater size than the boss 23 so that the blades may be pivoted togetherabout the boss 23 and secured within the channel plate 22 by means ofthe outer plates 24 bolted through the channel plates 22 to the scrapingblade 14. by means of the transverse nutted bolts 21. the central one ofwhich passes through the boss 22. The tongue 19 is thus pivotallysecured to the blade 14 and will be free for swinging movement insubstantially a vertical plane within the limits of the shoulders 22 and22".. It will be noticed that a portion of the auxiliary blade 19overlaps the end of the scraping blade 14 and that at the end of thecutting edge 20 abuts the end of the blade 14 when the auxiliary bladeis lowered to approximately horizontal position. The shoulder 19 abutsthe shoulder 22 of the plate 22 at that time,

thereby co-operating to limit the downward position of the auxiliaryblade. The upper shoulder 19 of the blade 19 being set slight- 1y backpermits the auxiliary blade to be swung upwardly until the top edge ofthe tongue 19 contacts against the angular shoulder 22 of the channelplate 22. It is obvious that the auxiliary blade 19 may be similarlymounted at either end of the scraping lade 14. always being attached tothe rear end of blade 14 when the same is diagonally disposed withreference to the longitudinal center of the frame. The attachment isonly operative when the scraping blade is disposed in a transversediagonal position.

The outer plates 24 have slots adjacent their ends and a centralaperture so that the blades when pivotally connected may be readilydetached by taking out the central bolt and simply loosening the upperand lower bolts.

A flexible member 25 is secured at one end to the top intermediateportion of the blade 19 and passes over the sheave 26, having its otherend made fast to the operating lever 27 located adjacent the driversplatform on the machine. the position of blade 19 and may be quicklymanipulated to raise the free end of said blade as desired.

A transverse arm comprising two angularly extending members 28 and 29,is secured across the sub-frame 11 of the machine forwardly of theblades. The lower member 28 is bent upwardly at a point beyond the outerside of frame 11, while the upper member 29 is bent upwardly from a lineacross the inner side of the same portion of frame 11, said members 28and 29 being clamped together between the sides of frame 11 and also ata point adjacent their outer extremities. A wedge block 29 is drivenbetween the angle formed by members 28 and 29 at a point directly overone side of the frame 11 traversing the arm and being secured to frame11 by means of bolts at either side of said arm. A depending loop orhook 30 is secured to the outer end of the members 28 and 29, throughwhich a flexible member 31 is passed having one of its ends secured tothe free end of the blade 19 through the aperture in the tongue 19 andhaving its other end preferably secured to the king bolt 18 on the fronttruckof the machine.

In order to furnish an efficient base of resistance for the work done bythe auxiliary blade projecting from one side of the machine. anon-skidding runner is provided rigidly secured to one of the rearwheels 10, preferably the rear wheel on the opposite side of the machinefrom the auxiliary blade 19. This runner comprises a relatively thickhorizontal body portion 32 having an outwardly curved sharpened cuttingedge 33 The lever 27 thus controls secured to the bottom edge thereofand adapted to cut into the snow, ice or ground and prevent the backrtion of the machine from skidding laterall y f due to the resistance ofthe snow against the auxiliary blade. Obviously, the auxiliary bladedisposed Wholly on one side of the machine and adapted to overhan theshoulder of the road, must have a rm'base of resistance. Such a runnerhas been found to bethe only means whereby-the back portion of themachine will be prevented from any skidding. The runner is preferablysecured to the wheel 10 by means of a plurality of hooks 34 having theirouter ends threaded and bolted against the outer side of the bodyportion 32. The runner is further secured and braced bymeans of thediagonal brace bar 35, best shown in Fig. 7 the inner end of which issecured to the rear axle housing 17. The guard chain 36 connects thefront .end of the runner with the main frame 8.

It is obvious that, as has been stated, the auxiliary blade as well asthe runner and arm for receiving the draft means, may be disposed on theopposite sides of the machine, thereby reversing the entire attachment.This is desirable oftentimes when one side of the blade 14 or blade 19becomes worn. In order to reverse the attachment, the scraping blade 14must, of course, first be swung on the turn-table to the oppositediagonal position with reference to the longitudinal center line of themachine.

The operation of the device is probably obvious but may be brieflysummarized as follows:

The auxiliary blade is preferably lowered to a substantial horizontalposition and the machine pulled along the side of the road with theauxiliary blade overhanging the shoulder of the road and the ditch atthe side thereof. The scraping blade 14 will cut the ice and snow andplow the same, pushing the plowed snow outwardly and backwardly to theauxiliary blade. The auxiliary blade will spread the show out anddistribute the same over the shoulder and ditch of the road, therebyentirely removing the snow from the travelled portion of the road andpreventing a ridge of snow from accumulating at the sides.

The auxiliary blade 19 is so pivoted to the scraping blade 14 that thebottom edge of blade 19, when in horizontal position, will extend at aconsiderably higher level than the cutting edge of blade 14, preferablyfour or five inches thereabove. The purpose of this construction is toenable the auxiliary blade to pass freely over any ice. or crustadjacent the outer end of the scraping blade, thereby not disturbing thecrust or cutting into the snow but merely pushing the plowed snowbackwardly and outwardly and distributing the same into the ditch at theside of the road and over the shoulders of the road. The raisedlevel ofthe auxiliary blade therefore lessens the resistance of the snow thereonand permits the snow'to-be distributed and spread out evenly due to thereceiving shoulder of the road.

The draft device for the outer end of the auxiliary blade properly holdssaid blade in operative position, while the lever 27 permits the blade19 to be quickly raised as desired. p

From the above description, it will be seen that an extremely simple buthighly efficient attachment has been invented fora standard roadscraping machine capable of being readily attached or detached.Extensive actual usage of the device has shown the same to be highlysuccessful for the purposes intended including the distribution ofgravel, sand and dirt.

It will, of course, be understood that various changes may be made inthe form, details, proportions and arrangement of parts withoutdeparting from the scope of the invention, and that the device may beequally well applied to other types of grading or road-working machinesthan the type illustrated in the accompanying drawings.

What is claimed is:

1. In a road scraping machine having a frame and a blade carried therebyat an oblique angle to the longitudinal center line thereof, anattachment of the class described comprising an auxiliary blade pivotedat its inner end to the rear end of said scraping machine blade, andadapted to overhang the shoulder of a road and distribute the plowedmaterial thereover, means carried by said auxiliary blade for limitingthe downward position thereof and normally hold the same substantiallyin alignment with said scraping machine blade, and means for suddenlyswinging said auxiliary blade upwardly to clear an obstacle at the sideof the road.

2. The structure set forth in claim 1, and said means comprising a leveron said frame and a flexible member connecting said lever with theintermediate portion of said auxiliary blade.

3. A distributing and plowing attachment for a road scraping machine,said machine being provided with a wheeled frame and a scraping bladecarried at an oblique angle thereto comprising an auxiliary bladesecured at one end to the rearward end of said scraping blade, adaptedto overhang the shoulder of a road and distribute the plowed materialthereover, and a runner secured to one of the rear wheels of said frameadapted to furnish a base of resistance to permit said auxiliary bladeto dis tribute material when said scraping machine is moving forwardly.

4. In a road scraping machine having a wheeled frame and a blade carriedthereby at an oblique angle to the longitudinal center line of saidframe, a distributing and plowing attachment of the class describedcomprising an auxiliary bladesecured at its inner end to the rear end ofsaid machine blade, projecting outwardly therefrom in substantialalinement with and adapted to overhang the shoulder of a road and distribute the plowed material thereover, and an outwardly extended andsharp edged runner rigidly secured to the bottom of one of-the backwheels of said/frame adapted to furnish a base of resistance to thedistributing action of said blade. I

5. In a road scraping machine having a frame and a blade carried therebyat an oblique angle tothe longitudinal center line thereof, anattachment of the class described comprising anauxiliary blade pivotedat itsinner end to the rear end of said scraping machine blade, andadapted to overhang the shoulder of a road and distribute the plowedmaterial thereover, a recessed plate secured adjacent one end of saidscraping blade provided with astop shoulder and one end of saidauxiliary blade provided with a tongue pivoted'in the recessed portionof said plate and provided with a cooperating stop shoulder adapted tocooperate with said first mentioned stop shoulder to normally hold saidauxiliaryblade in alignment with said scraping blade operative todistribute plowed material.

In testimony'whereof I affix my signature. I

HENRY E. WILSON.

